Cranx-pin-ttyrning tool



A. WEBER.

CRANK PIN TURNING TOOL. APPLICATION NED FEB 10, W20.

1 ,389; 54 1 Patented Aug. 30, 1921,

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ALEXAHIPEIE, AFEEEJR, 0F M i. 1371;? mm. mcepil aw Fig. 4 i" a pur'tmnIn is HUM" film ling Lu!!! wlw. same. and ii (211m 7 HIP ff i fnrm in ma1 wings which @n- 1" chi-wi s: main in l hnvim; an @xicnsim at {ESQQfld. S2, d tens iwn :2 i5 Shawl 7 tvgrally formed Hwiwiy 1 hut 111a 5+svpazzaL-ie tilerefymn and defachabie til if desilad, um! 23km, saidextensi Hwy be pmvided at any we wv-niuni lwin? w" near 011% end substzm'i J1 spasm! f: we and if dfifiilfid. luau the emmm is shown at righ;angles, u h0 5 l but 11% sama may be dispesed at any suitabig. s:

tool 11 ringe may be relative to the body. I have shown a bracket. 6 ofangular cross section detachably and adjusta-bly held on the inner faceof the extension 2 by means of a pair of cap screws 5 which are extendedthrough an elongated vertical slot '1 in extension 2 and are threaded.at their ends into one of the legs of the bracket 6. By reference toFig. 3, it will he observed that I have indicated a scale ofgr'aduajzions on one face of the extension 2, which may repiesent inchesor fractions thereof, whereby the bracket 6 maybe V'Bliically adjustedon the extension 2, for purposes hereinafter described.

A suitable tool carriage 9 is adjustably held on the upper face of thebody '1, the lower portion thereof having a tongue which slidablyengages a groove 7 in the upper face of body 1 and an elongated Yentical slot 1.4 being provided in the central portion of the carriage forreceiving a cap screw 15 adapted to be extended through said slot andthreaded at its lower end into the body 1, as shown in Fig. 2.

The carriage may haadiusted on. the body by means of a screw 15 threadedthrough a suitable lug 18 on the body 1, the inner emi of said screwengaging the rear end of said carriage and the head 17 of said screw hasing a suitable dial with a scale thereon for setting the screw so as tolimit the more ment of the carriage. It is, of course, on stood, thatthe cap screw 15 is first loosened before the carriage may be adjusted hmeans of the screw 16.

A tool 11. is adapted to be held in :1 transverse groove 10 formed inthe forward and up er edge of the carriage 9 by means of 2*. ho der 12which islattached to the carriage Shy means of a cap screw 13, oneportion of said holder engaging the upper face of the carriageand theother portion thereof ongaging the upper face of the tool, as shown inw.

in in he understood, by reference to Figs/1 and *2, that the crank pin23 of crank shaft 2%, when the tool is properly ositioned thereon, willbe disposed so that its axis is transversely of the body 1 of thedevice. It is necessary, in order to attach the device to the crankshaft to provide means for adjusting either the extension. 2 or thecarriage 9 so .as to provide an open ing between the adjacent portion ofsaid carriage and the bracket 6, or between the and bracket 6, to permitthe pas" sage of the pin 23 therebetween when the device is placed inposition over the pin. Therefore. when the device is positioned. thecarriage 9, in the form of device shmvn, will first he moved backwardiyon the body 1-. for a distance suliicient for the purpose stated. Afterthe pin is inserted between the carriage 9 and extension 2, then the canadjusted forwardly again. so

tenor; equal to thathat the cutting edge of the tool 11 will engage theperiphery of 'he pin 23 and. the innor surface f the leg of the bracket-6 will provide bearing surfaces against which the pin :23 will re; Inthis connection, it will he EiRiiEi at it is essential that one of thehearing sees, or rests provided on (market 6 should he substantiallyopposite the ltuttin edge oi the tool ii, and the other of said favesshould be prefen ably 11% a r thereto :unl synced from th iifiliZfiPi ll w? ill tool edge f r as dis mom 1 radio of the pin to he turned. Thispoi- 11111;: of the pin may be accomplished to a nice y by means of thes als slmn n on the side of extension 2.

How, in some cases at least, the two heal ing sin-faces, or restsprovided on 'ziracket i} may he suflivent to hold the pin 25} conterezlrelative to the tool. but 1 prefer to provide an additional as shown inFigs. and L This '\l r, inch s an :Lnljustin screw Eli! having a 1. volii p )1 thereon wit 1 :1 J groow: n the nd of said tip for en- Hagenwntz with the periphe of the pin 23, and a stem :2 seated in the owlof the screw, I prefer to mount the screw i so that an axial line of thev would insert, the angle of the hint-list ii, i we in Fig;

1 may 1! dew in s :11 ways with equally gm: (lop upon the character theit a available for we. ,1 the device for us is shown in Figs, 1, :5 and3, and includes 3 hi rlrei 351 adapted to be at taoheri to the 1 ed 1m?lathe by means of one or more screws 52, or otherwise and having}: lugs29 thereon between which :1 lug 27 of a sleeve 26 is pivot-ally held ona shaft 28; said sleeve having an opening thcretln'ongh for sliilablyI'eoeiving: the body 1 of my device. Xow, it will be understcmd thatwhen the bearing ends 33, 33, of the crank shaft are centered in a latheand hold, respectively, in the chuck or tail stock, the pins 2? willrotate in circles concentric relative to the axis of said bearings 33.Likewise, when the turning device is mounted on the crank shaft-andattached to the iathe as stated, the main portion thereof wiil rotate,connecting rod fashion, around the axis of said bearings and the tool 11will move in a cirole eccentric relative to the axis of the pin 23, Theextended portion of the body 1 will slide in the sleeve 26 on bracket 30in a manner similar t the movement of a piston in a cyiinder.

As shown in Fig. =1, 1 may omit the bracket 30 and shrew 36 nltogetl'n-rand allow the end of the body 1 to rest upon and slidably engage thelathe guides L as the crank is turned in the lathe. For instance, if thelathe is lanai-ml in a cinch-wise dir ction, the body 1 will engage theright hand guide L and if operated reversely said body will engage theleft hand gui e f the lathe. With the use of thelit 'i krl ill andSleeve 26 it will be observed that the lJH ljZ i will at all times beheld in a true ll'llllI-H'QI'S-J plan-'3 relative to the axis of thelathe, and thus. if the pins 23 are irregular or out of parallel witheach other and with hearing 33. thie condition. will be correvted in theup (ration of the devioe. for the leevr will hold the body 1 in aFllF-YllSE' plane in the lathe and the tool 11 fs held in true plane onsaid body and lunh iP-ipe fl ilF will be corrected automatically.

In the lat*er Form l ing the tool carriage o? the latw a ong the guidesL until film and tliei' o' ngage; the body 1 of the turning device. Anyrw ularities in the pins 13 will be 311" tlv 2icentuaterfl in lheIEXQTEI'HQUt. oi the will I -nd of body 1 and so that the :dfllt; may llreadily discernible (it lia and wt bod The tool carriagg may then ormoi-o For 5! distance equal in on tion of the body L will Sllfli' agaimtflu wage and eauee a ,lll' i ii'l or i m:- erted by the too! on the; winne illl'l than at the other end. until the iin has been and parallelwith tlubearings Bil l have shown the tool '"ii'riagiof the lathe in thediva" .;r, any ne in th use of machine t ols derstand thr- (mm-ail Inother WUI'llB. espma not. la"- avail ible. tlz be held in one or mom 1'will 1 able holdingmen-Ila and I'll oi i[l\ invention rotated ar und lbs:13"? f ill 'l 1 =3; bnft ii bearing port ons 633 of ll 0 stead of as llltillllflff -l"; ilmi'i r-ll. in this ease the body I. may b ,fijl'flhflwl in ll e llfit'w of the niechauiv f r i'olatiog flu tool boil thesame result being; amornpliahrd the other (gases.

When the first pin of a Set. is: in to a Smooth aunlare. the: adiusliug;ll mm be set So as lo bum l'lm i'ear' i .ii' l own ment of the oarriag-5 the i'eadim' i smile thereon being noted and .d dl' iim ol the St! maythereafter la: throw to 1 r extent and diameter.

(hat I iylaiui is:

l. A crank pin mining: i 'l' body member. a. blorh 1E ll l lllirl flbw-Mn lll lilll hgj a limo Rani

of said surfaces being parallel with the 8d 1aoent surface of said body.a relatlvely 1&2

astable tool supported on said body, an. movable at right angles to theplane of sa d;

WOIlC engaging members. and means for con-1y fining the work betweensaid tool and said.

bearing sui't'zum, the matting edge l' Paid tool being in a planecutting the axis o," the A crank pin turning (levii'e including a b dy.a relatively adjustable extension and a tool carriage on said body, atool held on said (arriage and having a cutting edge equal in length tothe pins to ho turned and paralleling the axis of said pine. and meanson said extension for conning a Prank pin l tw aen said tool and saidextension in a turn ng operation. and an auxiliary rest belw. therotting line of said tool for centerin;,; the manic pins relative tosaid confining means,

1. crank pin turning device rompriain; a body men'iber. work engagingmeans flui'oou having a bearing, a bearing aurface dia u seilSubstantially at. right auglesi to tlw adj l1! surface of said body andanolbm' bearing sui'fare substantially at right aiigiit a d first.mentioned bearing surare, a tool adjustable relative to said workengaging means and disposed in a plane iaurnwliate said b dy and saidlast men limwl bearing! suil'ai'o and means for (tonliiiiou' the workfor a turning operation.

:3, A Manic pin turning: derive inrluding a bod-v. an i *-.tension onmid body, a bracket 'Iti'fl l on Hfllll extension and having: augularl tinted bearing sin-terns For engagenwuf with different portions of theperipher; of the ('IHflk pins, :1 tool operatively b=ld intermediate oneof said bearing surand said body, and means for relasvly adjusting saidtool and said extension.

(3. A crank pin turning device including a. body. an extension on saidbody. means on said extension having angularly related bean in;surtar'es for engagement with difi'ervnt portions of the iei'iphery ofthe crank pine. a tool intermediate one of said surfai-os and I.l(l bodfor engagement with said pin, a (1 an auxiliary rest ('arried on saidbody and iii.-|1o.-i l in a plane cutting tlu; axis of said wield; girl. as set forth.

T. vrank pix? turning device inrluding a boil; having a verticalextension there n, a V lwl; adjustable on said extension. a tooladjustable relatinto said blor-k and ll l. ll in a plane iutvrn'iediatethe outer surl'aw of said block and said body and means for advanein andretracting! ea id tool rrlative to the worlc.

u. 7i eianl: pin turning devive in luding a body, a bearing memberdisposed in a vertical plane relative thereto, another bearing memberdisposed in a plane parallel with said body, an adjustable device onsaid body for engagement with and for holding the work in engagementwith said parallel hearing meinber, and a tool adjustable relative toand for holding the Work in engagement with said vertical bearingmember.

9. A crank pin turning device having an elongated body a relativelyadjustable work engaging mem er, and a cutting tool sup orted on saidbody in the plane of the axis of the work, said work engaging meansineluding an angularly faced member having 15 right angularly disposedsurfaces adapted to engage difierent portions of the peripl1 ery of theWork, and said WOlk being eonfined Within the angle of said surfaces,and held thereagainst when said tool is opera- 2o tively held relatively,thereto.

Signed at Los Angeles, in the eonnty of Los Angeles, and State ofCalifornia.

ALEXANDER WEBER.

In presence of- LUTHER L. MACK, CHARLES C. illoix'roomaar.

